Malicious PDF — malware analysis report

Static analysis result for SHA-256 1deb57669ba91d65…

MALICIOUS

PDF

43.2 KB Created: 2020-09-01 01:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b2a4d67ed900c14dd8bc584ba22d060 SHA-1: 223c9958c591386cc44179798b97d1135ecddc47 SHA-256: 1deb57669ba91d655e2617c268626fcb84bd4b12b919ed5cee234517a2ce34ca
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a catalogue download. This URL, 'https://ttraff.club/pify?keyword=ajanta+wall+clocks+catalogue+pdf', is the primary indicator of malicious intent, likely leading to further malicious content or malware. The file also contains a large number of embedded links, many pointing to Shopify, which is flagged as a PDF link farm.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/pify?keyword=ajanta+wall+clocks+catalogue+pdf
    • https://cdn.shopify.com/s/files/1/0465/0359/2094/files/87971316890.pdf
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/cbspd_gi_scope_study_guide_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/7849/1041/files/51940999691.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9551/files/sulunujomisis.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/94340000382.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/fatuvemoxoleterivik.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/ungrouped_frequency_distribution.pdf
    • https://static.usrfiles.com/ugd/01bc73_d6c08ff534144432b77767e20fff0cf2.pdf
    • https://static.usrfiles.com/ugd/89363e_6f470a52cf3b4abaa4038967268b99ae.pdf
    • https://static.usrfiles.com/ugd/e3834b_a01d1f4b2ad7475da17cee3d62760a1c.pdf
    • https://static.usrfiles.com/ugd/2b25b5_c6fe27893e0b4998a4123d47d1ce56b8.pdf
    • https://static.usrfiles.com/ugd/defcb2_5542bed216ca44bdbb0445d32455f106.pdf
    • https://static.usrfiles.com/ugd/b8c837_edea0cf8e05d4029a32e84e22397f4cd.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_dd64a32f4ddf437781157c0990d7db52.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005585.bin
96a772eb5bc8e068a659376b30afd1370a6c1575f66d83aa1f9017a5a345e6f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5585 5448 bytes
font_01_sfnt_off00006841.bin
4e2e1c14ee2af218d0f9779477fb3370974ddf16a088ef9159491e151e651958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6841 10160 bytes
font_02_sfnt_off00008b40.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B40 16036 bytes

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